| Floormaster | Joseph Michael Torrente | — | (831) 750 8533 | Other | Paso Robles · San Luis Obispo County | — | — |
| Florascape | Patrick Michael Cosgrove | — | (805) 540 1742 | Windows, patio, painters | Nipomo · San Luis Obispo County | — | — |
| Flores Painting | Flores Painting | interested@domainmarket.com | (805) 975 8201 | Windows, patio, painters | Paso Robles · San Luis Obispo County | — | — |
| Fluid Resource Management | Troy Vincent Ellison | — | (805) 597 7100 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Fochtman Construction | Matthew Robert Fochtman | — | (805) 904 8222 | GC, remodel, ADU | Pismo Beach · San Luis Obispo County | — | — |
| Foote Enterprises | Richard Sherwin Foote | — | (805) 235 3103 | GC, remodel, ADU | Cambria · San Luis Obispo County | — | — |
| Forde Construction INC | Brad John Forde | — | (805) 481 0752 | GC, remodel, ADU | Grover Beach · San Luis Obispo County | — | — |
| Foremaster Construction INC | John Edward Jr Foremaster | — | (805) 748 0224 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Forever Green Landscape Construction | Michael Wayne Pelayo | — | (805) 431 5221 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Forge Electric | Micheal Christphor Cogliandro-Camacho | bohdy@forgeelectric.com | (209) 628 1024 | Electricians | San Luis Obispo · San Luis Obispo County | — | — |
| Form Design + Build INC | Dustin Jon Pires | info@formdesignbuild.com | (805) 547 2344 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Formula Factory Fabrication | Formula Factory Fabrication | — | (805) 391 3545 | Other | Los Osos · San Luis Obispo County | — | — |
| Fortington Construction | Patricia Mary Cullinan | — | (805) 801 6625 | Windows, patio, painters | Atascadero · San Luis Obispo County | — | — |
| Fortini Landscapes Design Build | Matthew Ian Cathey | — | (805) 704 3781 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Foss Electric | Ryan Mathew Foss | — | (805) 540 8844 | Electricians | Atascadero · San Luis Obispo County | — | — |
| Foster Enterprises | Gary Stephan Foster | — | (805) 544 6026 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Foundation Solutions INC | Ryan Patrick Kremke | — | (805) 462 0100 | Other | Templeton · San Luis Obispo County | — | — |
| Fractal Concrete Construction | Echavarria Ernest | — | (805) 801 0714 | Other | Grover Beach · San Luis Obispo County | — | — |
| Frakes-scapes INC | Jeromy James Frakes | — | (805) 801 2870 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Frank Duncan General Craftsman | Frank Duncan General Craftsman | — | (805) 801 5313 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Frank Lindsay DBA Genesis Water | Frank Lindsay DBA Genesis Water | — | (805) 473 0563 | Other | Grover Beach · San Luis Obispo County | — | — |
| Frank Merill Backhoe Services | Frank Scott Merrill | — | (805) 528 4900 | Other | Los Osos · San Luis Obispo County | — | — |
| Frank Ricigliano Construction | Frank Michael Ricigliano | — | (805) 674 8420 | GC, remodel, ADU | Templeton · San Luis Obispo County | — | — |
| Frank's Lock And Key | Luke Andrew Fosmire | — | (805) 489 1576 | Other | Arroyo Grande · San Luis Obispo County | — | — |
| Franklin Construction | Matthew Liam Breitmaier | franklin@franklinconstruction.com | (714) 788 3542 | GC, remodel, ADU | Atascadero · San Luis Obispo County | — | — |
| Frantz Construction INC | Joshua David Frantz | info@frantzconstruction.build | (805) 868 6933 | GC, remodel, ADU | San Luis Obispo · San Luis Obispo County | — | — |
| Frazier Construction | Stephen Clark Frazier | — | (805) 637 9511 | GC, remodel, ADU | Cambria · San Luis Obispo County | — | — |
| Fred E Harpster Contractor | Fred E Harpster Contractor | — | (805) 441 7781 | GC, remodel, ADU | Morro Bay · San Luis Obispo County | — | — |
| Fred Gaalswyk Jr | Fred Gaalswyk Jr | — | (805) 458 2449 | GC, remodel, ADU | Pismo Beach · San Luis Obispo County | — | — |
| Fred's Floors | Fred's Floors | — | (805) 235 1593 | Other | Morro Bay · San Luis Obispo County | — | — |
| Fred's Tile | Fred's Tile | — | (805) 929 6195 | Other | Nipomo · San Luis Obispo County | — | — |
| Freedom Plumbing | Freedom Plumbing | — | (714) 632-8989 | GC, remodel, ADU | Nipomo · San Luis Obispo County | — | — |
| Fresh Paint Co INC | Jim Ringley | jim@freshpaintslo.com | (805) 787 0451 | Windows, patio, painters | San Luis Obispo · San Luis Obispo County | — | — |
| From The Ground Up | From The Ground Up | — | (805) 712 3477 | GC, remodel, ADU | Paso Robles · San Luis Obispo County | — | — |
| Front Gate Fencing | Front Gate Fencing | — | (805) 363 8635 | Other | Nipomo · San Luis Obispo County | — | — |
| Frontier Floor & Window Coverings | Frontier Floor & Window Coverings | — | (805) 238 7878 | Other | Paso Robles · San Luis Obispo County | — | — |
| Fuentez Construction INC | Thomas Arthur Fuentez | — | (562) 514 2829 | GC, remodel, ADU | Arroyo Grande · San Luis Obispo County | — | — |
| Fuller Fabricating INC | Jonathan Alan Fuller | astigma@astigmatic.com | (805) 801 7859 | Other | Paso Robles · San Luis Obispo County | — | — |
| Fullmer Construction | Larry Lynn Fullmer | paige@fullmerco.com | (805) 441 7869 | GC, remodel, ADU | Pismo Beach · San Luis Obispo County | — | — |
| Furniture Installation Team INC | Michael John Lopeman | cware@fitslo.com | (805) 546 8290 | Other | San Luis Obispo · San Luis Obispo County | — | — |